For me, one of the best aspects of participating in a writers' critique group is celebrating each other's successes. Big or small, when one of your fellow writers sells a piece they've written - be it a poem, an article, a short story - we can all enjoy a little bit of their success.
AND WHEN IT'S A BOOK THEY SOLD WE DO THE HAPPY DANCE WITH THEM!
Tex Thompson of the DFW Writers' Workshop signed a two-book deal with Solaris for her cowboys-and-fishmen fantasy. It's cool that I now know another traditionally published novelist. It gives me renewed hope (that I'll get off my duff and actually do more writing).